Window ventilator



FLEXIBLE` @c PQRTABLE. Segrgh 300m May 2l, 1940. s. HCFFx-:R ET AL 2,201,830

WINDOW VENTILATOR Filed oct. 5, 1939 lNvx-:No Rs .Solenzara Hqjr Sammel Nason/t2 1 BY ATTO R N E Y LDU.

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Patented May 2l, 1940 UNITED STATES Search Room PATENT OFFICE WINDOW VENTILATOR Solomon Hoifer and Samuel Nosowitz, Brooklyn, N. Y.

Application ctober 5, 1939, Serial No. 297,975

6 Claims.

This invention relates to new and useful improvements in a window Ventilator.

The invention has for an object the construction of a window ventilator which is characterized by a pair of sheet metal panels having louvered areas on its face, and top and bottom ilanges engaging each other so that the panels may be laterally adjusted to windows of different widths, and a novel locking mechanism for holding the two panels in various immovable adjusted positions.

Still further the invention proposes characterizing the locking mechanism by a at member pivotally mounted on the inner of the two panels adjacent one of its anges and having a cam end engaging through an opening in the inner flange and frictionally engaging the outer flange for locking the panels immovably in position.

Still further the invention proposes to so arrange the flat member that the cam passes a certain dead center during the latching operation, and then the flat member is held in this position.

It is proposed to so arrange the parts that by applying pressure to the front end of the flat member it is possible to pivot it from its locking position.

Still further the invention contemplates a novel arrangement in vmounting the flat member so that its position may be adjusted to change the position of the cam end thereof to compensate for the wear of the cam, or the flange against which it acts, so that the locking device may be operable after considerable use.

Still further the invention has for an object the construction of a Window ventilator as mentioned which is simple and durable and which may be manufactured and sold at a reasonable cost.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawing, and to the appended claims Yin which the various novel features of the invention are more particularly set forth.

In the accompanying drawing forming a material part of this disclosure:

Fig. 1 is a front elevational view of a window ventilator constructed in accordance with this invention.

Fig. 2 is a vertical sectional view taken on the line 2 2 of Fig. 1.

Fig. 3 is a fragmentary enlarged elevational View looking in the direction of the line 3 3 of Fig. 2.

Fig. 4 is a horizontal sectional view taken on the line 4 4 of Fig. 3.

Fig. 5 is a fragmentary elevational view similar to Fig. 3 but illustrating a modified construction.

Fig. 6 is a vertical sectional view taken on the line 6 6 of Fig. 5.

Fig. 7 is a fragmentary vertical sectional View taken on the line 1 1 of Fig. 5.

Fig. 8 is a sectional View taken on the line 8 8 of Fig. 6.

The window ventilator in accordance with this invention includes a pair of sheet metal panels ID and Il, respectively, each having a plurality of louvered areas I2 through which air may pass. Each of the panels III and II is provided with top and bottom flanges IDa and IIB, respectively, engaging each other to slidably support the panels. Each of these flanges has its outer portions bent inwards to engage one over the other to hold the panels tightly together, limiting the panels to longitudinal motion only. Each of the panels is also imprinted with decorative embossed areas I 3. The outer end portions I0b and IIb of the panels have inwardly directed flanges I4 for closing up the open outer ends of the panels.

Each of the panels is also provided with longitudinally embossed grooves I 5 which engage each other and assist in supporting the panels.

A at member I6 is pivotally mounted on the inner of the two panels adjacent one of the flanges thereof. A pintle I'l engages through the flat member and through the adjacent panel for accomplishing the pivotal mounting of the flat member. At one end the flat member I6 is provided with an enlarged portion I6a forming a cam. This cam Ila normally extends through an opening I8 formed in the inner flange l Ia and engaging against the material of the outer flange Il]El for locking the panels together. The flat member I6 has a handle portion Itb at its end remote from the cam i621. This handle portion has an outwardly turned area I6bb to facilitate gripping thereof.

In Fig. 3 the flat member I6 is shown in its lock position. In this position the cam IIa is engaging through the opening I8 and frictionally engaging the outer flange IUa of the panel I0. The cam itself is mounted upon the panel II. These panels are now held in an immovable position.

The lock may be opened by gripping the handle portion Il.;b and moving it upwards, and around the pivot I1, in a clockwise direction, when viewing Fig. 3. This forces the cam llia around and into a position in whichI it will not extend into the opening I8, and now it does not bear against the flange I 0 of the panel I0, and the panels may be adjusted. The latch may be closed by moving the flat member back to its original position. As the fiat member is moved back, the cam will pass a certain dead center and then the handle portion Ib rests against the flange IIa of the panel II. The ilat member is now locked in its locking position.

In Figs. 5 to 8 inclusive, a modified form of the invention has been disclosed which distinguishes from the prior form in an arrangement for supporting the flat member so that it may slightly be raised or lowered to place the cam into better operative position. According to this form of the invention the flat member I6 is pivotally supported upon a cylindrical eccentric member 20. This eccentric member has a head portion 2| by which it may be turned. A pintle pin Il engages through the eccentric member off of its center, and through the material of the panel Il, for turnably supporting the eccentric member. The face of the eccentric member adjacent the panel II is formed with serrations 22 which engage the face of the panel II. A spring 2| is coaxially mounted upon the pintle I1 and acts between the pintle and the panel I I for urging the serrations 22 tightly against the face of the panel.

The eccentric member 20 is limited to turn through substantially 180 degrees, by the pin 24 mounted thereon, and extending into an arcuate slot 25 formed in the panel I I. The eccentric 20 is so arranged that it may be moved from a high point to a lower point by turning it through 180 degrees.

The operation of this form of the device is as follows:

The flat member I6 may be manipulated to engage the cam portion II)a into and out of locking positions. If it is found that the grip of the cam is becoming loosened, either due to wear of the cam, or the bending of the flange against which it acts, then adjustment may be made as follows:

The knob 20 is gripped and slightly pulled out to release the serrations 22 from the face of the panel II. Then the knob 2I is turned so as to turn the eccentric member 2U to lower the flat member I6. The eccentric member may be turned through ilve or ten degrees or any quantity desired, to obtain a better action between the cam and its contacting flange. When the knob 2| is released the spring 23 will again urge the serrations 22 against the panel II.

While we have illustrated and described the preferred embodiments of our invention, it is to be understood that we do not limit ourselves to the precise constructions herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claims.

Having thus described our invention, what we claim as new, and desire to secure by United States Letters Patent is:

1. A window ventilator, comprising a pair of sheet metal panels having louvered areas through which air may pass and telescopic top and bottom flanges so that the panels may be laterally adjusted to windows of different widths, -a ilat member pivotally mounted on the inner of the two panels adjacent one of its flanges and having a. cam end engaging through an opening in the inner flange, and frictionally engaging the outer flange for locking the panels immovably in position.

2. A window ventilator, comprising a pair of sheet metal panels having louvered areas through which air may pass and telescopic top and bottom ilanges so that the panels may be laterally adjusted to windows of different widths, a flat member pivotally mounted on the inner of the two panels adjacent one of its ilanges and having a cam end engaging through an opening in the inner flange, and frictionally engaging the outer flange for locking the panels immovably in position, said flat member being provided with handle portion at its end remote from said cam end.

3. A window ventilator, comprising a pair of sheet metal panels having louvered areas through which air may pass and telescopic top and bottom ilanges so that the panels may be laterally adjusted to windows of different widths, a flat member pivotally mounted on the inner of the two panels adjacent one of its ilanges and having a cam end engaging through an opening in the inner ange, and frictionally engaging the outer ange for locking the panels immovably in position, said cam end being arranged to be operative against the flange at a point where the cam passes a dead center of pivot.

4. A Window ventilator, comprising a pair of sheet metal panels having louvered areas through which air may pass and telescopic top and bottom flanges so that the panels may be laterally adjusted to windows of diierent widths, a flat member pivotally mounted on the inner of the two panels adjacent one of its flanges and having a cam end engaging through an opening in the inner ilange, and frictionally engaging the outer ilange for locking the panels immovably in position, said ilat member having a handle portion including a small area bent outwards which may be easily gripped.

5. A window ventilator, comprising a pair of sheet metal panels having louvered areas through which air m-ay pass and telescopic top and bottom flanges so that the panels may be laterally adjusted to windows of diierent widths, a flat member pivotally mounted on the inner of the two panels adjacent one of its flanges and having a cam end engaging through an opening in the inner ilange, frictionally engaging the outer flange for locking the panels immovably in position, said ilat member being pivotally mounted on a pintle, said pintle being of cylindrical form and eccentrically pivotally mounted, and means for holding said eccentric pintle in various ilxed positions to hold said cam in corresponding ilxe`d positions.

6. A window ventilator, comprising a pair of sheet metal panels having louvered areas through which air may pass and telescopic top and bottom flanges so that the panels may be laterally adjusted to windows of dierent widths, a ilat member pivotally mounted on the inner of the two panels adjacent one of its flanges and having a cam end engaging through an opening in the inner flange, frictionally engaging the outer flange for locking the panels immovably in position, said ilat member being pivotally mounted on a pintle, said pintle being of cylindrical form and eccentrically pivotally mounted, and means for holding said eccentric pintle in various xed positions to hold said cam in corresponding fixed positions, and means for limiting turning of said eccentric pintle so that it moves the ilat member from a. high point to a low point.

SOLOMON HOFFER. SAMUEL NOSOWITZ. 

